To secure masonry veneer to a backup system or to connect two or more masonry wythes, wall ties-made of wire or sheet metal- are necessary. But how do you choose from the thousands of available shapes, sizes, gauges, and steel types of masonry wall ties? BRICK TO WOOD STUDS The most common notion of a wall tie is the corrugated flexible type with nail holes. This versatile tie most often is used in low-rise residential construction. BRICK TO NEW CONCRETE For new concrete walls, dovetail anchor slots are installed in the forms before the concrete is poured. BRICK TO EXISTING CONCRETE For existing concrete walls without dovetail slots, use channel slots. They fasten to the concrete wall with expansion bolts. BRICK TO CONCRETE MASONRY Three types of wall ties are typically used to tie brick to concrete masonry backup. The rectangular box tie is a single piece of wire that joins two wythes having aligned courses. For misaligned courses, choose from two adjustable, two-piece systems. The first is a U-shaped double-eye anchor and a pintle tie. The other adjustable two-piece anchor comes in the same sizes but allows both horizontal and vertical movement. BRICK OR BLOCK TO STRUCTURAL STEEL Wall ties can be attached to wire anchor rods or metal straps welded to the steel columns or beams.